Portable barbecue cooker



FIG. 1 is a front perspective view of a portable barbecue cooker showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a front elevation view thereof;

FIG. 4 is a rear elevation view thereof;

FIG. 5 is a left end elevation view thereof;

FIG. 6 is a right end elevation view thereof; and,

FIG. 7 is a top plan view thereof.

The details shown in broken lines form no part of the claimed design. 

The ornamental design for a portable barbecue cooker, as shown and described. 